2102021222222 has 4 divisors (see below), whose sum is σ = 3153031833336. Its totient is φ = 1051010611110.

The previous prime is 2102021222149. The next prime is 2102021222269. The reversal of 2102021222222 is 2222221202012.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2102021222194 and 2102021222203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525505305554 + ... + 525505305557.

It is an arithmetic number, because the mean of its divisors is an integer number (788257958334).

Almost surely, 2^{2102021222222} is an apocalyptic number.

2102021222222 is a deficient number, since it is larger than the sum of its proper divisors (1051010611114).

2102021222222 is a wasteful number, since it uses less digits than its factorization.

2102021222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051010611113.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 2102021222222 its reverse (2222221202012), we get a palindrome (4324242424234).

The spelling of 2102021222222 in words is "two trillion, one hundred two billion, twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".